Nucleus and DNA Replication

• • The control center of the cell. Dictates everything a cell will do and products it will make
  • Largest and most prominent cell's organelles

  Nucleus
• The membrane that surrounds the nucleus. Consist of nuclear pore.

  Nuclear Envelope
• Responsible for manufacturing RNA (necessary for construction of ribosomes)

  Nucleolus
• A single wrapped histone complex

  Nucleosome
• Threads inside the nucleus, composed of DNA and associated proteins

  Chromatin
• Composed of DNA and proteins. Condensed form of Chromatin.

  Chromosome
• DNA wrapped around supporting histone

  DNA Macrostructure
• Made up of two strands that complement each other, the strand fit together and bind each other.

  DNA
• Four Bases of DNA

  Adenine Thymine Guanine Cytosine
• Four bases of RNA

  Adenine Uracil Guanine Cytosine
• It begins with the genes

  Protein synthesis
• Ultimately dictates the structure and function of a cell

  Gene expression
• The section of three DNA based in a row that codes for a specific amino acids

  Triplet
• This is where protein synthesis takes place

  Cytoplasm
• A single-strand nucleic acid that carries a copy of the genetic code for a single gene out of the nucleus and into the cytoplasm where it is used to produce protein

  Messenger RNA
• • Contains base Uracil
  • Contains no complementary strand


  RNA
• A three base sequence of mRNA

  Codon
• Is an enzyme that adds new nucleotides to a growing strand of RNA.

  RNA polymerase
• The process of synthesizing a chain of amino acids called a polypeptide

  Translation
• Translation two major aids

  tRNA rRNA